Apple has updated its Apple Store app for the iPhone to introduce push notifications for delivery updates. So when you order an item from the Apple Store, you’ll receive updates on its delivery status without having to check manually. The Cupertino company will even let you know when your iPhone is ready for an upgrade.

You can get push notifications for new mentions, direct messages, favorites, retweets, and followers. The catch is that only 1,000 Twitterrific users will get access to the feature initially. Availability will be then rolled out gradually to new users.

The official Dropbox app for iOS has today been updated to add push notifications and an all-new PDF viewer. With version 2.1, users will now receive an alert when a folder has been shared with them. The update is available to download from the App Store now.

I’ve always been a fan of Twittelator Neue, a clean Twitter client for iPhone that’s super fast and has a unique way of handling pictures in your timeline. However, I never agreed with its pricing policy. The app costs $4.99 upfront, but users had to pay an extra $1.99 per year on top of that for push notifications.

Fortunately, its creators have had a change of heart. With its latest update, Twittelator Neue provides push notifications for free.